40 people whose measurements were plotted from toddlers to adults, the UI team concludes mechanical forces, including chewing, appear incapable of producing the resistance needed for new bone to be created in the lower mandible, or jaw area. Rather, they write in a paper published online in the Journal of Anatomy, it appears the chin’s emergence in modern humans arose from simple geometry: As our faces became smaller in our evolution from archaic humans to today in fact, our faces are roughly 15 percent shorter than Neanderthals’ the chin became a bony prominence, the adapted, pointy emblem at the bottom of our face. "In short, we do not find any evidence that chins are tied to mechanical function and in some cases we find that chins are worse at resisting mechanical forces as we grow," says Holton, assistant professor and anthropologist in the Department of Orthodontics at the UI College ofCheap NFL jerseys Dentistry. "Overall, this suggests that chins are unlikely related to the need to

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